Linked from
The 12 pages that link to Abrasive, each with the reason it gives.
Mohs scaleRelated: Relative hardness helps explain why some minerals can abrade others.
BauxiteRelated: Calcined bauxite can serve as an abrasive in industrial applications.
Baking sodaRelated: Baking soda’s fine particles can scrub some surfaces without a harsh grit.
CorundumRelated: Crushed corundum can abrade materials because it resists scratching.